MCQOPTIONS
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MCQOPTIONS
This section includes 198 Mcqs, each offering curated multiple-choice questions to sharpen your Computer Networks knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
An ethernet frame that is less than the IEEE 802.3 minimum length of 64 octets is called _______ |
| A. | short frame |
| B. | runt frame |
| C. | mini frame |
| D. | man frame |
| Answer» C. mini frame | |
| 2. |
There is no separate Frame ending sequence in an Ethernet Packet after each frame. State TRUE/FALSE. |
| A. | TRUE |
| B. | FALSE |
| C. | - |
| D. | - |
| Answer» B. FALSE | |
| 3. |
Each Frame in an Ethernet packet starts with a ___. |
| A. | SFD (Start Frame Delimiter) with alternating 0 and 1 for 7 bytes |
| B. | SFD (Start Frame Delimiter) with alternating 0 and 1 for 4 bytes |
| C. | Start Frame Sequence |
| D. | Start Frame Indicator |
| Answer» B. SFD (Start Frame Delimiter) with alternating 0 and 1 for 4 bytes | |
| 4. |
The Frame Check Sequence (FCS) of an Ethernet Frame is a ___ code. |
| A. | Cyclic Error Check |
| B. | Cyclic Redundancy Check |
| C. | End of Frame |
| D. | Beginning of Frame |
| Answer» C. End of Frame | |
| 5. |
An Ethernet header contains ___ as the first two fields. |
| A. | Destination MAC Address |
| B. | Source MAC Address |
| C. | Both Source MAC and Destination MAC addresses |
| D. | None |
| Answer» D. None | |
| 6. |
What are the parts of An Ethernet Frame? |
| A. | Header |
| B. | Payload |
| C. | FCS (Frame Check Sequence) |
| D. | All the above |
| Answer» E. | |
| 7. |
Which are the collision free methods/technologies used to access the Medium Access Control (MAC)? |
| A. | Token Bus |
| B. | Token Ring |
| C. | Both Token Ring and Token Bus |
| D. | None |
| Answer» D. None | |
| 8. |
What are the other collision detection and recovery methods used along with Ethernet? |
| A. | ALOHA |
| B. | Slotted ALOHA, R-ALOHA |
| C. | AX.25 |
| D. | All the above |
| Answer» E. | |
| 9. |
What are the disadvantages of an Ethernet Network? |
| A. | The length of Twisted pair copper cables can not be so long for good transmission quality. |
| B. | Ethernet is fast only if the number of devices is less in the network due to CD (Collision Detection) technique. Only one device can transmit at a point of time. |
| C. | Addition of new devices or stations slows down the network for all existing stations. Ethernet is suited only for low to medium traffic networks. |
| D. | All the above |
| Answer» E. | |
| 10. |
Advantages of an Ethernet network are ___. |
| A. | Easy to install and maintain even by persons with less technical knowledge |
| B. | Cheaper to intall as the cables and RJ45 plugs are available in all varieties in open market |
| C. | Easy to upgrade as the Ethernet is compatible with Gigabit-Ethernet, ATM (Asynchronous Transfer Mode) and Advanced Routing Switches. |
| D. | All the above |
| Answer» E. | |
| 11. |
Which is not an ethernet topology below? |
| A. | STAR |
| B. | RECTANGLE |
| C. | RING |
| D. | None |
| Answer» C. RING | |
| 12. |
A STAR network topology offers high bandwidths over long distances. State TRUE/FALSE. |
| A. | TRUE |
| B. | FALSE |
| C. | - |
| D. | - |
| Answer» B. FALSE | |
| 13. |
Which is the network topology that is prone to bottlenecks though easy to install? |
| A. | BUS |
| B. | RING |
| C. | STAR |
| D. | TREE |
| Answer» D. TREE | |
| 14. |
A RING network topology is costly to build and difficult to maintain. State TRUE/FALSE. |
| A. | TRUE |
| B. | FALSE |
| C. | - |
| D. | - |
| Answer» B. FALSE | |
| 15. |
Which is a network topology that is easy to build? |
| A. | BUS, STAR |
| B. | RING |
| C. | TREE |
| D. | All the above |
| Answer» B. RING | |
| 16. |
A group of STAR topology networks connected to a BUS like a cable form or create the ___ topology as a whole. |
| A. | BUS |
| B. | STAR |
| C. | RING |
| D. | TREE |
| Answer» E. | |
| 17. |
In a ___ topology, the nodes or stations of a network are connected to a central hub or server. |
| A. | BUS |
| B. | STAR |
| C. | RING |
| D. | TREE |
| Answer» C. RING | |
| 18. |
In ___ topology, all the nodes are connected like a ring when drawn pictorially on a paper. |
| A. | BUS |
| B. | STAR |
| C. | RING |
| D. | TREE |
| Answer» D. TREE | |
| 19. |
In a ___ topology, all the nodes or stations are connected to a main central cable. |
| A. | BUS |
| B. | STAR |
| C. | TREE |
| D. | RING |
| Answer» B. STAR | |
| 20. |
Choose the topologies used in a LAN network below. |
| A. | BUS |
| B. | RING |
| C. | STAR, TREE |
| D. | All the above |
| Answer» E. | |
| 21. |
CSMA/CA method is best suited for a ___ network. |
| A. | Wired |
| B. | Wireless |
| C. | - |
| D. | - |
| Answer» C. - | |
| 22. |
What happens in an Ethernet network implementing CSMA-CD when a collision is detected? |
| A. | The station retransmits the frame again immediately |
| B. | The station retransmits the lost frames after a delay |
| C. | The station retransmits the all frames after a delay |
| D. | The station aborts the whole transmission of data |
| Answer» C. The station retransmits the all frames after a delay | |
| 23. |
What are the advantages of Carrier Sensing? |
| A. | Sensing a carrier can avoid simultaneous transmissions by other nodes |
| B. | It will help in reducing retransmission of data frames due to collisions with other station data frames |
| C. | It improves performance of the network as the individual nodes sense for a carrier present in the transmission medium before requesting access to it. |
| D. | All the above |
| Answer» E. | |
| 24. |
What is the meaning of Carrier Sense in CSMA (Carrier Sense Multiple Access)? |
| A. | The abilitiy to check the shared transmission medium whether it is being used by any other node or not |
| B. | The ability to restrict other nodes to access the shared medium |
| C. | The ability to gain access to the shared medium |
| D. | None |
| Answer» B. The ability to restrict other nodes to access the shared medium | |
| 25. |
Choose the correct abbreviations below. |
| A. | CSMA - Carrier Sense Multiple Access |
| B. | CD - Collision Detection |
| C. | CA - Collision Avoidance |
| D. | All the above |
| Answer» E. | |
| 26. |
Choose the correct Abbreviations used with 10GBase cables below. |
| A. | SR (Short Range), LR (Low Reach) |
| B. | LRM (Long Reach Multimode), |
| C. | ER (Extended Reach) |
| D. | All the above. |
| Answer» E. | |
| 27. |
Choose the 10-GBase standard cables from the below options that can carry data of 10gbps without loss up to 10km distance. |
| A. | 10GBase-LX4 |
| B. | 10GBase-ER |
| C. | 10GBase-SR |
| D. | All the above |
| Answer» E. | |
| 28. |
Choose the correct Base-T cables and their speeds. |
| A. | 10Base-T = Ethernet with 10mbps, 100Base-T = Fast Ethernet with 100 mbps speed |
| B. | 10GBase-T = Gigabit Ethernet with 1000 mbps or 1 gbps |
| C. | 10GBase = 10 Gigabit Ethernet with 10 gbps speed |
| D. | All the above |
| Answer» E. | |
| 29. |
What is the sped of a 100BaseT cable? |
| A. | 10 mbps |
| B. | 100 mbps |
| C. | 1 gbps |
| D. | None |
| Answer» C. 1 gbps | |
| 30. |
An Ethernet Jack is ___. |
| A. | RJ11 |
| B. | RJ14 |
| C. | RJ45 |
| D. | None |
| Answer» D. None | |
| 31. |
What is the other name for an Ethernet network? |
| A. | WAN |
| B. | Mesh Network |
| C. | DIX |
| D. | DIG |
| Answer» D. DIG | |
| 32. |
Who designed or invented an Ethernet network for LANs in the year 1973? |
| A. | Grahambell |
| B. | Dennis Ritchie |
| C. | Robert Metcalfe |
| D. | John McAfee |
| Answer» D. John McAfee | |
| 33. |
Choose the cables or media used to implement 802.3 ethernet network below. |
| A. | 10Base5 = Thick Coaxial cable, 10Base2 = Thin Coaxial cable |
| B. | 10BaseT = Twisted Pair cable, 10BaseF = Fiber Optic cable |
| C. | 10Broad36 = Broadband signalling over 75 Ohm cable |
| D. | All the above |
| Answer» E. | |
| 34. |
Choose the correct IEEE standards used to manage various computer networks. |
| A. | IEEE 802.1 = Network Management standards, IEEE 802.2 = General Data Link Layer standards |
| B. | IEEE 802.3 = MAC layer protocols for a BUS network with CSMA/CD, IEEE 802.4 = MAC layer protocols for a BUS network with Token passing feature |
| C. | IEEE 802.5 = MAC layer protocols for a Token RING network, IEEE 802.6 = Standars to operate a MAN (Metropolitan Area Network) |
| D. | All the above |
| Answer» E. | |
| 35. |
IEEE stands for ___. |
| A. | Instistute of Electrical and Electronics Engineering |
| B. | Institute of Electrical and Electronics Engineers |
| C. | Institute Ethernet and Electronics Engineering |
| D. | None |
| Answer» C. Institute Ethernet and Electronics Engineering | |
| 36. |
The minimum length of data in Ethernet frame is |
| A. | 64 Bytes |
| B. | 46 Bytes |
| C. | 1500 Bytes |
| D. | 1518 Bytes |
| Answer» C. 1500 Bytes | |
| 37. |
NIC provides an Ethernet station with physical address of |
| A. | 2 bytes |
| B. | 4 bytes |
| C. | 6 bytes |
| D. | 8 bytes |
| Answer» D. 8 bytes | |
| 38. |
10Base5 is a |
| A. | Thin Ethernet |
| B. | Thick Ethernet |
| C. | Twisted Pair cable |
| D. | Fiber |
| Answer» C. Twisted Pair cable | |
| 39. |
Gigabit Ethernet has a data rate of |
| A. | 100 Mbps |
| B. | 1000 Mbps |
| C. | 1500 Mbps |
| D. | 2000 Mbps |
| Answer» C. 1500 Mbps | |
| 40. |
Header plus trailer of Ethernet is |
| A. | 12 Bytes |
| B. | 14 Bytes |
| C. | 16 Bytes |
| D. | 18 Bytes |
| Answer» E. | |
| 41. |
There is no need for CSMA/CD in |
| A. | Duplex Mode |
| B. | Half Duplex Mode |
| C. | Quarter Duplex |
| D. | Full Duplex |
| Answer» E. | |
| 42. |
10BaseT is used to connect the stations by using |
| A. | Star Topology |
| B. | Bus Topology |
| C. | Ring Topology |
| D. | Mesh Topology |
| Answer» B. Bus Topology | |
| 43. |
The term that is used to set standards to enable intercommunication among equipment from a variety of manufacturers is called |
| A. | Project 802 |
| B. | Project 8802 |
| C. | Project 2088 |
| D. | Project 208 |
| Answer» B. Project 8802 | |
| 44. |
In gigabit Ethernet three or more stations are connected by |
| A. | Ring Topology |
| B. | Bus Topology |
| C. | Star Topology |
| D. | Mesh Topology |
| Answer» D. Mesh Topology | |
| 45. |
The line encoding scheme that is used in 1000BaseCX is |
| A. | Manchester |
| B. | NRZ |
| C. | 4D-PAMS |
| D. | MLT-3 |
| Answer» C. 4D-PAMS | |
| 46. |
A source address is always a |
| A. | Unicast |
| B. | Multicast |
| C. | Broadcast |
| D. | None of the above |
| Answer» B. Multicast | |
| 47. |
The original Ethernet was created in |
| A. | 1980 |
| B. | 1976 |
| C. | 1960 |
| D. | 1967 |
| Answer» C. 1960 | |
| 48. |
In transparent bridges, when station A sends a frame to station D then there is no entry in |
| A. | Switch initiator |
| B. | Ports |
| C. | Bridge |
| D. | Router's header |
| Answer» D. Router's header | |
| 49. |
The maximum length of 1000BaseSX is |
| A. | 550 m |
| B. | 25 m |
| C. | 100 m |
| D. | 5000 m |
| Answer» B. 25 m | |
| 50. |
The field of the MAC frame that alerts the receiver and enables it to synchronize is known as |
| A. | SFD |
| B. | preamble |
| C. | source address |
| D. | destination address |
| Answer» C. source address | |